Patent US4620894A successfully refreshed from Google Patents.
US4620894A
Expired / Lapsed
US
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Apparatus for processing circuit board substrate
Assignee: EIDSCHUN ENGINEERING Inc
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Filing: 1985-03-11
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Granted: 1986-11-04
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Expires: 2005-03-11
Abstract
Abstract Method and apparatus for chemically treating vertically oriented electronic printed circuit board substrates. The apparatus includes a conveyor system for transporting vertically oriented circuit board substrates through a plurality of adjacent spray chambers. The conveyor system minimizes the amount of chemical solution which is carried from one chamber into an adjoining chamber and permits the utilization of hollow slack tubing to engage and transport the substrates.
Inventors
- 👤 Marshall I. Gurian
- 👤 Don P. Pender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:42
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/08; H; H05; H05K; H05K3/00; H05K3/0085
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
203 words
Apparatus for processing vertically oriented circuit board substrates including (a) means for transporting said circuit board substrates, including (i) first and second sets of tube support members circulating in respective closed paths, portions of each path being in opposed, spaced-apart, parallel relationship with portions of the other path; (ii) first and second hollow resilient continuous tube members each operatively associated with one of said sets of tube support members, portions of each of said resilient tube members contacting and being laterally displaced in a direction of travel by said support members of said associated set traveling in said parallel portions of said path thereof, bearing against and compressing portions of the other when contacting and being transported by said support members of said associated set traveling in said parallel portions of said path thereof, and bearing against said vertically oriented substrate interposed between said tube members to maintain said substrate in generally fixed position with respect to said portions contacting said substrate during transport thereof in said direction of travel, (b) means for directing a fluid spray against said substrate while said substrate is transported by said circuit board transporting means; and, (c) means for moving said tube support members along said paths.
Claim 2
Dependent Claim
203 words
Apparatus for processing vertically oriented circuit board substrates including (a) means for transporting said circuit board substrates, including (i) first and second sets of tube support members circulating in respective closed paths, portions of each path being in opposed, spaced-apart, parallel relationship with portions of the other path; (ii) first and second hollow resilient continuous tube members each operatively associated with one of said sets of tube support members, portions of each of said resilient tube members contacting and being laterally displaced in a direction of travel by said support members of said associated set traveling in said parallel portions of said path thereof, bearing against and compressing portions of the other when contacting and being transported by said support members of said associated set traveling in said parallel portions of said path thereof, and bearing against said vertically oriented substrate interposed between said tube members to maintain said substrate in generally fixed position with respect to said portions contacting said substrate during transport thereof in said direction of travel, (b) means for directing a fluid spray against said substrate while said substrate is transported by said circuit board transporting means; and, (c) means for moving said tube support members along said paths.
Claim 3
Dependent Claim
15 words
The apparatus of claim 1 wherein said spray means includes at least one spray nozzle.
Claim 4
Dependent Claim
28 words
The apparatus of claim 2 including means for oscillating said spray nozzle during transport of said substrate in said direction of travel by said circuit board transporting means.
Claim 5
Dependent Claim
25 words
The apparatus of claim 1 wherein portions of each resilient continuous tube member not contacting said other continuous tube member or said substrate are slack.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-03 | 1990-05-05 | 1990-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-03 | 1994-05-05 | 1994-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-03 | 1998-05-05 | 1998-11-04 | $7700.00 | Window Closed / Lapsed |